Preparation and application of alkaline phosphatase activated photosensitizer
A technology of photosensitizer and phosphatase, which is applied in medical preparations containing active ingredients, photodynamic therapy, compounds of Group 5/15 elements of the periodic table, etc., can solve side effects, prolong skin photosensitization, low selectivity, etc. problem, to achieve the effect of avoiding self-absorption, improving photodynamic ability and improving effect
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[0024] Example 1: Synthesis ALP PS-Et
[0025] PS Se-I (0.5g, 0.80mmol) dissolved in acetonitrile (20mL), diethyl chlorophosphate (0.21g, 1.22mmol) and triethylamine (0.12g, 1.2mmol) were added dropwise, the reaction was stirred at room temperature for 5min Later, DMAP (9.8 mg, 0.08 mmol) was added, and stirring was continued overnight at room temperature. After the reaction, the solvent was removed by rotary evaporation, and column chromatography was performed with dichloromethane and methanol as eluents to obtain a bright red solid compound. ALP PS-Et (0.2g, 32.8%). 1 H NMR(400MHz, CDCl 3 ) δ(ppm) 8.76-8.67(m, 1H), 7.99(s, 2H), 7.78-7.68(m, 2H), 7.61-7.51(m, 2H), 7.11(d, J=15.6Hz, 1H) , 6.88 (d, J = 16.0Hz, 1H), 4.43-4.27 (m, 4H), 1.42 (t, J = 7.2Hz, 6H). 13 C NMR(100MHz, CDCl 3 )δ(ppm) 158.51, 152.63, 147.51, 139.23, 135.27, 133.40, 133.29, 131.90, 129.65, 129.45, 129.29, 128.38, 126.82, 124.77, 116.23, 115.03, 89.52, 65.45, 65.39, 16.18, 16.11.
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[0026] Example 2: Synthesis ALP PS
[0027] ALP PS-Et (0.2g, 0.26mmol) was dissolved in dichloromethane (10mL), trimethylsilyl bromide (1mL) was slowly added dropwise under the protection of nitrogen, and reacted at room temperature for 8h. Filter, rinse the filter residue with dichloromethane (50mL) and dry in a vacuum drying oven to obtain a red solid compound ALP PS (77.8 mg, 42.3%). 1 H NMR(400MHz, DMSO-d 6 )δ(ppm) 8.60(d, J=8.0 Hz, 1H), 8.29(s, 2H), 8.11(d, J=7.2Hz, 1H), 7.86(d, J=16.4Hz, 1H), 7.83( s, 1H), 7.69 (m, 2H), 7.21 (d, J=16.0Hz, 1H). 13 C NMR(100MHz, DMSO-d 6 )δ(ppm) 158.98, 150.55, 139.28, 134.74, 134.19, 132.64, 130.60, 129.63, 128.63, 126.31, 124.22, 117.44, 115.91, 92.31, 71.98. HRMS (ESI): m / z[M+NH + ]calcd for C 20 H 11 I 2 N 3 OSe + 725.8049; found 725.8030.
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